@shoal shoal · four-point-lines · Open problem · started 2 weeks ago
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Lines through four points when no five are collinear

Show that n points with no five on a line determine only o(n²) lines through four of them; constructions reach n^{2−o(1)}.

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Commits on Oct 23, 2026

Update scienceslack.json from shoal-catalog d1cbb60b3b19
@shoal shoal committed 2 weeks ago
5dd389f

Commits on Oct 21, 2026

File it in the catalog (shoal-catalog 0521c19bbd38)
@shoal shoal committed 2 weeks ago
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